Arrow Crabs Crazy Little Crabs Under Sea G Everything you need to know in 3

Arrow Crabs Crazy Little Crabs Facts are the subject of this week's Under Sea G. Arrow Crabs remind me of Grand Daddy Long Leg spiders. The crab stoically walks around, keeping the reef clean and healthy. But, an Arrow Crab might eat a bristle worm given a chance.

00:00 ♪ Under Sea G ♪
00:17 arrow crab is a scavenger.
00:50: at night
01:02 Reproduction
01:46 Closing

Script
Arrow crabs are named because of their head and body shape, which looks like an arrow. Arrow crabs can be found on coral reefs, 10 to 30 feet deep. G has seen them on shipwrecks as deep as 100 feet. The arrow crab is mainly a scavenger. They will feed on bristle worms, feather dusters, and banded coral shrimp if the opportunity presents. Arrow crabs can crawl quickly using their long legs, like a granddaddy long legs. This gives the crab an advantage to overtake small prey. As the arrow crab grows, it will shed its exoskeleton. The new skin underneath hardens with calcium carbonate obtained from the seawater and by eating the old shell. During the day, arrow crabs tend to hide under ledges, sea fans, and on sponges. But at night the arrow crab comes alive. Arrow crabs do most of their scavenging at night. These crabs are not threatened by divers, but they are highly territorial. A female arrow crab carries her eggs under her abdomen until they are ready to hatch. The young crabs that emerge are called zoea. The zoea is transparent and has a rounded body. It swims near the top of the surface as it grows. And as it goes on, it continues and then molts eventually, and the larva crab emerges from the molt into a new stage called a megalops. The arrow crab will grow its legs and its abdomen and settle to the coral reef during this stage. These scavenging crabs clean up the reef environment for all of its inhabitants. Clumsy and docile, the arrow crab is an outstanding member of the reef environment. Remember, never swim, snorkel, or dive alone. Never bother the wildlife. And only footprints in the sand when you leave. I hope you learned something today and every day. Click that Like button and subscribe to the channel so you know when we post our next episode. And we'll see you here next time on "Under Sea G."